So my iPhone Health app predicted that I should’ve had my period on 12/25/2019 and the 3-5 days following that, and the <a href="https://play.google.com/store/apps/details?id=com.glow.android.eve">Eve</a> app tells me I’m one day late on my period. I haven’t had a period since 11/27 and that period was 3 days late and only lasted 2-3 days. I know I’m not pregnant cause I had sex with my on again off again boyfriend two weeks before my last short period. Is there something wrong with me? I got on the Mirena IUD to regulate my periods and lessen the pain not to have it be like before I got the IUD.